package 算法;

import java.util.Scanner;

/**
 * @author coderFu
 * @create 2022/3/19
 */
public class CoderTest2 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        while(sc.hasNext()){
            int totalPrice = sc.nextInt();
            int price = sc.nextInt();
            int y = sc.nextInt();
            int day = price*y;

            int count = totalPrice%(price*y);
            if(count == 0){
                System.out.println(totalPrice/day);
            }else{
                System.out.println((totalPrice/day)+1);
            }
        }
    }
}
